US10340267B1 - Semiconductor devices including control logic levels, and related memory devices, control logic assemblies, electronic systems, and methods - Google Patents

Semiconductor devices including control logic levels, and related memory devices, control logic assemblies, electronic systems, and methods Download PDF

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US10340267B1
US10340267B1 US15/858,229 US201715858229A US10340267B1 US 10340267 B1 US10340267 B1 US 10340267B1 US 201715858229 A US201715858229 A US 201715858229A US 10340267 B1 US10340267 B1 US 10340267B1
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control logic
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channel region
type channel
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Scott E. Sills
Kurt D. Beigel
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Micron Technology Inc
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    • H01L27/04Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body
    • H01L27/06Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having at least one potential-jump barrier or surface barrier; including integrated passive circuit elements with at least one potential-jump barrier or surface barrier the substrate being a semiconductor body including a plurality of individual components in a non-repetitive configuration
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Abstract

A semiconductor device comprises a stack structure comprising decks each comprising a memory element level comprising memory elements, and a control logic level in electrical communication with the memory element level and comprising control logic devices. At least one of the control logic devices of the control logic level of one or more of the decks comprises at least one device exhibiting transistors laterally displaced from one another. A memory device, a thin film transistor control logic assembly, an electronic system, and a method of operating a semiconductor device are also described.

Description

TECHNICAL FIELD

Embodiments of the disclosure relate to the field of semiconductor device design and fabrication. More specifically, embodiments of the present disclosure relate to semiconductor devices including stack structures having control logic levels in decks thereof, and to related memory devices, control logic assemblies, electronic systems, and methods of operating a semiconductor device.

BACKGROUND

Semiconductor device designers often desire to increase the level of integration or density of features within a semiconductor device by reducing the dimensions of the individual features and by reducing the separation distance between neighboring features. In addition, semiconductor device designers often desire to design architectures that are not only compact, but offer performance advantages, as well as simplified designs.

One example of a semiconductor device is a memory device. Memory devices are generally provided as internal integrated circuits in computers or other electronic devices. There are many types of memory including, but not limited to, random-access memory (RAM), read-only memory (ROM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), Flash memory, and resistance variable memory. Non-limiting examples of resistance variable memory include resistive random access memory (ReRAM), conductive bridge random access memory (conductive bridge RAM), magnetic random access memory (MRAM), phase change material (PCM) memory, phase change random access memory (PCRAM), spin-torque-transfer random access memory (STTRAM), oxygen vacancy-based memory, and programmable conductor memory.

A typical memory cell of a memory device includes one access device, such as a transistor, and one memory storage structure, such as a capacitor. Modern applications for semiconductor devices can employ significant quantities of memory cells, arranged in memory arrays exhibiting rows and columns of the memory cells. The memory cells may be electrically accessed through digit lines (e.g., bit lines) and word lines (e.g., access lines) arranged along the rows and columns of the memory cells of the memory arrays. Memory arrays can be two-dimensional (2D) so as to exhibit a single deck (e.g., a single tier, a single level) of the memory cells, or can be three-dimensional (3D) so as to exhibit multiple decks (e.g., multiple levels, multiple tiers) of the memory cells.

Control logic devices within a base control logic structure underlying a memory array of a memory device have been used to control operations (e.g., access operations, read operations, write operations) on the memory cells of the memory device. An assembly of the control logic devices may be provided in electrical communication with the memory cells of the memory array by way of routing and interconnect structures. However, as the number of decks of a 3D memory array increases, electrically connecting the memory cells of the different decks of the 3D memory array to the assembly of control logic devices within the base control logic structure can create sizing and spacing complications associated with the increased quantities and dimensions of routing and interconnect structures required to facilitate the electrical connection. In addition, the quantities, dimensions, and arrangements of the different control logic devices employed within the base control logic structure can also undesirably impede reductions to the size of a memory device, increases to the storage density of the memory device, and/or reductions in fabrication costs.

It would, therefore, be desirable to have improved semiconductor devices, control logic assemblies, and control logic devices facilitating higher packing densities, as well as methods of forming the semiconductor devices, control logic assemblies, and control logic devices.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

FIG. 1 is a simplified side elevation view of a semiconductor device, in accordance with embodiments of the disclosure.

FIG. 2 is a block diagram of a thin film transistor (TFT) control logic level of the semiconductor device shown in FIG. 1, in accordance with embodiments of the disclosure.

FIGS. 3A through 3C are a simplified cross-sectional views of different CMOS inverters including vertical transistors laterally displaced from one another, in accordance with embodiments of the disclosure.

FIG. 4A through 4C are a simplified cross-sectional view of different CMOS inverters including horizontal transistors laterally displaced from one another, in accordance with additional embodiments of the disclosure.

FIG. 5 is simplified cross-sectional view of a CMOS inverter including FinFETs laterally displaced from one another, in accordance with further embodiments of the disclosure.

FIG. 6 is a schematic block diagram illustrating an electronic system, in accordance with embodiments of the disclosure.

DETAILED DESCRIPTION

Semiconductor devices including stack structures having control logic levels in decks thereof are described, as are memory devices, control logic assemblies, electronic systems, and methods of operating a semiconductor device. In some embodiments, a semiconductor device includes a stack structure including multiple decks (e.g., tiers) each individually including a control logic level (e.g., a TFT control logic level), an access device level on or over the control logic level, and a memory element level on or over the access device level. The control logic level of each individual deck of the stack structure is in electrical communication with the access device level and the memory element level of the individual deck. The control logic level of each individual deck of the stack structure may also be in electrical communication with a base control logic structure of the semiconductor device. The control logic level of each of the decks of the stack structure includes control logic devices and circuitry for controlling different operations of the memory element level and the access device level associated therewith. The control logic devices and circuitry included in the control logic level of each of the decks of the stack structure are different than additional control logic devices and circuitry included in the base control logic structure of the semiconductor device. The additional control logic devices and circuitry included in the base control logic structure work in conjunction with the control logic devices and circuitry included in the control logic level of each of the decks of the stack structure to facilitate desired operations (e.g., access operations, read operations, write operations) of the semiconductor device. In addition, the control logic devices included in the control logic level of at least one deck of the stack structure include at least one device including transistors (e.g., vertical transistors, horizontal transistors, fin field-effect transistors (FinFETs)) laterally (e.g., horizontally) displaced (e.g., spaced apart, separated) from one another. The devices, structures, assemblies, systems, and methods of the disclosure may facilitate increased efficiency, performance, simplicity, and durability in semiconductor devices (e.g., 3D memory devices) that rely on high packing density.

The following description provides specific details, such as material types, material thicknesses, and processing conditions in order to provide a thorough description of embodiments of the disclosure. However, a person of ordinary skill in the art will understand that the embodiments of the disclosure may be practiced without employing these specific details. Indeed, the embodiments of the disclosure may be practiced in conjunction with conventional fabrication techniques employed in the industry. In addition, the description provided below does not form a complete process flow for manufacturing a semiconductor device (e.g., a memory device). The semiconductor device structures described below do not form a complete semiconductor device. Only those process acts and structures necessary to understand the embodiments of the disclosure are described in detail below. Additional acts to form the complete semiconductor device from the semiconductor device structures may be performed by conventional fabrication techniques. Also note, any drawings accompanying the application are for illustrative purposes only, and are thus not drawn to scale. Additionally, elements common between figures may retain the same numerical designation.

As used herein, the term “configured” refers to a size, shape, material composition, material distribution, orientation, and arrangement of one or more of at least one structure and at least one apparatus facilitating operation of one or more of the structure and the apparatus in a predetermined way.

As used herein, the singular forms “a,” “an,” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise.

As used herein, “and/or” includes any and all combinations of one or more of the associated listed items.

As used herein, the terms “longitudinal,” “vertical,” “lateral,” and “horizontal” are in reference to a major plane of a substrate (e.g., base material, base structure, base construction, etc.) in or on which one or more structures and/or features are formed and are not necessarily defined by earth's gravitational field. A “lateral” or “horizontal” direction is a direction that is substantially parallel to the major plane of the substrate, while a “longitudinal” or “vertical” direction is a direction that is substantially perpendicular to the major plane of the substrate. The major plane of the substrate is defined by a surface of the substrate having a relatively large area compared to other surfaces of the substrate.

As used herein, spatially relative terms, such as “beneath,” “below,” “lower,” “bottom,” “above,” “upper,” “top,” “front,” “rear,” “left,” “right,” and the like, may be used for ease of description to describe one element's or feature's relationship to another element(s) or feature(s) as illustrated in the figures. Unless otherwise specified, the spatially relative terms are intended to encompass different orientations of the materials in addition to the orientation depicted in the figures. For example, if materials in the figures are inverted, elements described as “below” or “beneath” or “under” or “on bottom of” other elements or features would then be oriented “above” or “on top of” the other elements or features. Thus, the term “below” can encompass both an orientation of above and below, depending on the context in which the term is used, which will be evident to one of ordinary skill in the art. The materials may be otherwise oriented (e.g., rotated 90 degrees, inverted, flipped, etc.) and the spatially relative descriptors used herein interpreted accordingly.

As used herein, the term “substantially” in reference to a given parameter, property, or condition means and includes to a degree that one of ordinary skill in the art would understand that the given parameter, property, or condition is met with a degree of variance, such as within acceptable manufacturing tolerances. By way of example, depending on the particular parameter, property, or condition that is substantially met, the parameter, property, or condition may be at least 90.0% met, at least 95.0% met, at least 99.0% met, at least 99.9% met, or even 100.0% met.

As used herein, the term “about” in reference to a given parameter is inclusive of the stated value and has the meaning dictated by the context (e.g., it includes the degree of error associated with measurement of the given parameter).

As used herein, the term “NMOS” transistor means and includes a so-called metal-oxide transistor having a P-type channel region. The gate of the NMOS transistor may comprise a conductive metal, another conductive material, such as polysilicon, or a combination thereof. As used herein, the term “PMOS” transistor means and includes a so-called metal-oxide transistor having an N-type channel region. The gate of the PMOS transistor may comprise a conductive metal, another conductive material, such as polysilicon, or a combination thereof. Accordingly, the gate structures of such transistors may include conductive materials that are not necessarily metals.

FIG. 1 shows a simplified side elevation view of a semiconductor device 100 (e.g., a 3D memory device), in accordance with embodiments of the disclosure. As shown in FIG. 1, the semiconductor device 100 includes a base control logic structure 102, and a stack structure 103 overlying the base control logic structure 102. As described in further detail below, the stack structure 103 includes decks 104 (e.g., tiers) each individually including a thin film transistor (TFT) control logic level, an access device level over the TFT control logic level, a memory element level over the access device level, and interconnect structures extending between the TFT control logic level and each of the access device level and the memory element level. Each TFT control logic level of the decks 104 may individually include one or more control logic devices (e.g., CMOS devices) exhibiting neighboring, laterally displaced transistors (e.g., NMOS transistors, PMOS transistors), as also described in further detail below. The base control logic structure 102 is in electrical communication with one or more (e.g., each) of the decks 104 of the stack structure 103 by way of interconnect structures 112 extending between the base control logic structure 102 and one or more levels (e.g., the TFT control logic level) of the one or more decks 104 of the stack structure 103.

The base control logic structure 102 may include devices and circuitry for controlling various operations of the stack structure 103. The devices and circuitry included in the base control logic structure 102 may be selected relative to devices and circuitry included in the TFT control logic levels of the decks 104 of the stack structure 103. The devices and circuitry included in the base control logic structure 102 may be different than the devices and circuitry included in the TFT control logic levels of the decks 104 of the stack structure 103, and may be used and shared by different decks 104 of the stack structure 103 to facilitate desired operation of the stack structure 103. By way of non-limiting example, the base control logic structure 102 may include one or more (e.g., each) of charge pumps (e.g., VCCP charge pumps, VNEGWL charge pumps, DVC2 charge pumps), delay-locked loop (DLL) circuitry (e.g., ring oscillators), drain supply voltage (Vdd) regulators, and various chip/deck control circuitry. The devices and circuitry included in the base control logic structure 102 may employ different conventional CMOS devices (e.g., conventional CMOS inverters, conventional CMOS NAND gates, conventional CMOS transmission pass gates, etc.), which are not described in detail herein. In turn, as described in further detail below, the devices and circuitry included in the TFT control logic level of each of the decks 104 of the stack structure 103 may not be shared by different decks 104 of the stack structure 103, and may be dedicated to effectuating and controlling various operations (e.g., access device level operations, and memory element level operations) of the deck 104 associated therewith not encompassed within the functions of the devices and circuitry included in the base control logic structure 102.

With continued reference to FIG. 1, the stack structure 103 may include any desired number of the decks 104. For clarity and ease of understanding of the drawings and related description, FIG. 1 shows the stack structure 103 as including three (3) decks 104. A first deck 106 may include a first TFT control logic level 106A, a first access device level 106B on or over the first TFT control logic level 106A, a first memory element level 106C on or over the first access device level 106B, and first interconnect structures 106D extending between and electrically coupling the first TFT control logic level 106A to each of the first access device level 106B and the first memory element level 106C. A second deck 108 may overlie the first deck 106 and may include a second TFT control logic level 108A, a second access device level 108B on or over the second TFT control logic level 108A, a second memory element level 108C on or over the second access device level 108B, and second interconnect structures 108D extending between and electrically coupling the second TFT control logic level 108A to each of the second access device level 108B and the second memory element level 108C. A third deck 110 may overlie the second deck 108 and may include a third TFT control logic level 110A, a third access device level 110B on or over the third TFT control logic level 110A, a third memory element level 110C on or over the third access device level 110B, and third interconnect structures 110D extending between and electrically coupling the third TFT control logic level 110A to each of the third access device level 110B and the third memory element level 110C. In additional embodiments, the stack structure 103 includes a different number of decks 104. For example, the stack structure 103 may include greater than three (3) decks 104 (e.g., greater than or equal to four (4) decks 104, greater than or equal to eight (8) decks 104, greater than or equal to sixteen (16) decks 104, greater than or equal to thirty-two (32) decks 104, greater than or equal to sixty-four (64) decks 104), or may include less than three (3) decks 104 (e.g., two (2) decks 104).

The memory element levels (e.g., the first memory element level 106C, the second memory element level 108C, the third memory element level 110C) of the each of the decks 104 (e.g., the first deck 106, the second deck 108, the third deck 110) of the stack structure 103 may each individually include an array of memory elements. The array may, for example, include rows of the memory elements extending in a first lateral direction, and columns of the memory elements extending in a second lateral direction perpendicular to the first lateral direction. In additional embodiments, the array may include a different arrangement of the memory elements, such as hexagonal close packed arrangement of the memory elements. The memory elements of the array may comprise RAM elements, ROM elements, DRAM elements, SDRAM elements, Flash memory elements, resistance variable memory elements, or another type of memory element. In some embodiments, the memory elements comprise DRAM elements. In additional embodiments, the memory elements comprise resistance variable memory elements. Non-limiting examples of resistance variable memory elements include ReRAM elements, conductive bridge RAM elements, MRAM elements, PCM memory elements, PCRAM elements, STTRAM elements, oxygen vacancy-based memory elements, and programmable conductor memory elements.

The access device levels (e.g., the first access device level 106B, the second access device level 108B, the third access device level 110B) of the each of the decks 104 (e.g., the first deck 106, the second deck 108, the third deck 110) of the stack structure 103 may each individually include an array of access devices (e.g., TFT access devices). The access devices of the access device level (e.g., the first access device level 106B, the second access device level 108B, the third access device level 110B) of a given deck 104 (e.g., the first deck 106, the second deck 108, the third deck 110) may be operatively associated with the memory elements of the memory element level (e.g., the first memory element level 106C, the second memory element level 108C, the third memory element level 110C) of the given deck 104. The quantity and lateral positioning of the access devices of the access device level of the given deck 104 may, for example, correspond to the quantity and lateral positioning of the memory elements of the memory element level of the given deck 104. The access devices of the access device level may underlie (or overlie) and be in electrical communication with the memory elements of the memory element level. Together the access devices of the access device level and the memory elements of the memory element level operatively associated therewith may form memory cells for each of the decks 104 of the stack structure 103. The access devices may, for example, each individually include a channel region between a pair of source/drain regions, and a gate configured to electrically connect the source/drain regions to one another through the channel region. The access devices may comprise planar access devices (e.g., planar TFT access devices) or vertical access devices (e.g., vertical TFT access devices). Planar access devices can be distinguished from vertical access devices based upon the direction of current flow between the source and drain regions thereof. Current flow between the source and drain regions of a vertical access device is primarily substantially orthogonal (e.g., perpendicular) to a primary (e.g., major) surface of a substrate or base (e.g., the base control logic structure 102) thereunder, and current flow between source and drain regions of a planar access device is primarily parallel to the primary surface of the substrate or base thereunder. In additional embodiments, the access device levels (e.g., the first access device level 106B, the second access device level 108B, the third access device level 110B) are omitted (e.g., absent) from the decks 104 (e.g., the first deck 106, the second deck 108, the third deck 110) of the stack structure 103. For example, in place of the access device levels separate from the memory element levels (e.g., the first memory element level 106C, the second memory element level 108C, the third memory element level 110C), each of the decks 104 of the stack structure 103 may include a single (e.g., only one) level including memory elements and access devices.

The TFT control logic levels (e.g., the first TFT control logic level 106A, the second TFT control logic level 108A, the third TFT control logic level 110A) of the each of the decks 104 (e.g., the first deck 106, the second deck 108, the third deck 110) of the stack structure 103 may include devices and circuitry for controlling various operations of the memory element level (e.g., the first memory element level 106C, the second memory element level 108C, the third memory element level 110C) and the access device level (e.g., the first access device level 106B, the second access device level 108B, the third access device level 110B) (or of a single level including memory elements and access devices) of the deck 104 not encompassed (e.g., effectuated, carried out, covered) by the devices and circuitry of the base control logic structure 102. By way of non-limiting example, the TFT control logic levels may each individually include one or more (e.g., each) of decoders (e.g., local deck decoders, column decoders, row decoders), sense amplifiers (e.g., equalization (EQ) amplifiers, isolation (ISO) amplifiers, NMOS sense amplifiers (NSAs), PMOS sense amplifiers (PSAs)), word line (WL) drivers, repair circuitry (e.g., column repair circuitry, row repair circuitry), I/O devices (e.g., local I/O devices), test devices, array multiplexers (MUX), error checking and correction (ECC) devices, and self-refresh/wear leveling devices. As described in further detail below, the devices and circuitry included in the TFT control logic levels may employ TFT CMOS devices including laterally displaced transistors (e.g., PMOS transistors, NMOS transistors). The devices and circuitry of the TFT control logic level of each of the decks 104 may only be utilized to effectuate and control operations within a single (e.g., only one) deck 104 of the stack structure 103 (e.g., may not be shared between two or more of the decks 104), or may be utilized to effectuate and control operations within multiple (e.g., more than one) decks 104 of the stack structure 103 (e.g., may be shared between two or more of the decks 104). In addition, each of the TFT control logic levels (e.g., the first TFT control logic level 106A, the second TFT control logic level 108A, and the third TFT control logic level 110A) of the stack structure 103 may exhibit substantially the same configuration (e.g., substantially the same components and component arrangements), or at least one of the TFT control logic levels of the stack structure 103 may exhibit a different configuration (e.g., different components and/or a different component arrangement) than at least one other of the TFT control logic levels.

Thus, a semiconductor device according to embodiments of the disclosure comprises a stack structure comprising decks each comprising a memory element level comprising memory elements, and a control logic level in electrical communication with the memory element level and comprising control logic devices. At least one of the control logic devices of the control logic level of one or more of the decks comprises at least one least one device exhibiting transistors laterally displaced from one another.

FIG. 2 is a block diagram of a configuration of a TFT control logic level 200 for use in one or more of the decks 104 (FIG. 1) of the stack structure 103 (FIG. 1) of the semiconductor device 100 shown in FIG. 1. The TFT control logic level 200 may include a variety of control logic devices and circuits that would otherwise be included in off-deck circuitry (e.g., circuitry not presented within the TFT control logic level 200), such as circuitry within a base control logic structure (e.g., the base control logic structure 102 shown in FIG. 1). For example, as shown in FIG. 2, an assembly of control logic devices and circuits present within the TFT control logic level 200 may include one or more (e.g., each) of a local deck decoder 202, multiplexers (MUX) 204 (illustrated in FIG. 2 as a first MUX 204 a, second MUX 204 b, and a third MUX 204 c), a column decoder 206, a row decoder 208, sense amplifiers 210, local I/O devices 212, word line (WL) drivers 214, a column repair device 216, a row repair device 218, a memory test device 222, an ECC device 220, and a self-refresh/wear leveling device 224. One or more of the control logic devices and circuits may exhibit laterally-displaced transistors (e.g., laterally-displaced vertical transistors, laterally-displaced horizontal transistors, laterally-displaced FinFETs), as described in further detail below. The assembly of control logic devices and circuits present within the TFT control logic level 200 may be operatively associated with (e.g., in electrical communication with) off-deck devices 236 (e.g., a controller, a host, global I/O devices) located outside of the TFT control logic level 200, such as within the base control logic structure 102 shown in FIG. 1. The off-deck devices 236 may send a variety signals to the TFT control logic level 200, such as a deck enable signal 226, a row address signal 230, a column address signal 232, a global clock signal 234; and may also receive a variety of signals from the TFT control logic level 200, such as a global data signal 228. While FIG. 2 depicts a particular configuration of the TFT control logic level 200, one of ordinary skill in the art will appreciate that different control logic assembly configurations, including different control logic devices and circuits and/or different arrangements of control logic devices and circuits, are known in the art which may be adapted to be employed in embodiments of the disclosure. FIG. 2 illustrates just one non-limiting example of the TFT control logic level 200.

Thus, in accordance with embodiments of the disclosure, a method of operating a semiconductor device comprises controlling functions of a stack structure having multiple decks each comprising memory cells using control logic levels of the multiple decks. The control logic levels each comprise at least one control logic device exhibiting laterally-displaced transistors. Additional functions of the stack structure are controlled using a base control logic structure in electrical communication with the control logic levels of the stack structure.

As shown in FIG. 2, one or more off-deck devices 236 located outside of the TFT control logic level 200 (e.g., in the base control logic structure 102 shown in FIG. 1) may be configured and operated to convey signals (e.g., a deck enable signal 226, a row address signal 230, a column address signal 232) to different devices of the TFT control logic level 200. For example, the off-deck devices 236 may send a deck enable signal 226 to the local deck decoder 202, which may decode the deck enable signal 226 and activate one or more of the MUX 204 (e.g., the first MUX 204 a, the second MUX 204 b, and/or the third MUX 204 c) of the TFT control logic level 200. As described in further detail below, when activated, the MUX 204 may individually be configured and operated to select one of several input signals and then forward the selected input into a single line.

The local deck decoder 202 of the TFT control logic level 200 may be configured and operated to receive activation (e.g., trigger) signals from a deck enable signal 226 and communicate with the off-deck devices 236 to generate control signals, which are then directed to one or more of the MUX 204 (e.g., the first MUX 204 a, the second MUX 204 b, and/or the third MUX 204 c) of the TFT control logic level 200 to activate and/or deactivate the one or more of the MUX 204. When activated, the MUX 204 may individually be configured and operated to select one of several input signals, and then forward the selected input into a single line.

The first MUX 204 a (e.g., a row MUX) of the TFT control logic level 200 may be in electrical communication with the local deck decoder 202 and the row decoder 208 of the TFT control logic level 200. The first MUX 204 a may be activated by signal(s) from the local deck decoder 202, and may be configured and operated to selectively forward at least one row address signal 230 from the off-deck devices 236 to the row decoder 208. The row decoder 208 may be configured and operated to select particular word lines of a deck (e.g., one of the first deck 106, the second deck 108, and the third deck 110 shown in FIG. 1) including the TFT control logic level 200 based on the row address signal 230 received thereby.

With continued reference to FIG. 2, the row repair device 218 of the TFT control logic level 200 may be in electrical communication with the row decoder 208, and may be configured and operated to substitute a defective row of memory elements of a memory element array of a memory element level (e.g., one of the memory element levels 106C, 108C, 110C shown in FIG. 1) operatively associated with (e.g., within the same deck 104 shown in FIG. 1) the TFT control logic level 200 for a spare, non-defective row of memory elements of the memory element array of the memory element level. The row repair device 218 may transform a row address signal 230 directed to the row decoder 208 (e.g., from the first MUX 204 a) identifying the defective row of memory elements into another row address signal identifying the spare, non-defective row of memory elements. Defective rows (and columns) of memory elements may, for example, be determined using the memory test device 222 of the TFT control logic level 200, as described in further detail below.

The WL drivers 214 of the TFT control logic level 200 may be in electrical communication with the row decoder 208, and may be configured and operated to activate word lines of a deck (e.g., one of the first deck 106, the second deck 108, and the third deck 110 shown in FIG. 1) including the TFT control logic level 200 based on word line selection commands received from the row decoder 208. The memory elements of a memory element level (e.g., one of the memory element levels 106C, 108C, 110C shown in FIG. 1) operatively associated with the TFT control logic level 200 may be accessed by way of access devices of an access device level (e.g., one of the access device levels 106B, 108B, 110B shown in FIG. 1) operatively associated with the TFT control logic level 200 for reading or programming by voltages placed on the word lines using the WL drivers 214.

The self-refresh/wear leveling device 224 of the TFT control logic level 200 may be in electrical communication with the row decoder 208, and may be configured and operated to periodically recharge the data stored in memory elements of a memory element level (e.g., one of the memory element levels 106C, 108C, 110C shown in FIG. 1) operatively associated with (e.g., within the same deck 104 shown in FIG. 1) the TFT control logic level 200. During a self-refresh/wear leveling operation, the self-refresh/wear leveling device 224 may be activated in response to an external command signal, and may generate different row address signals that may be forwarded to the row decoder 208. The row decoder 208 may then select particular word lines of a deck (e.g., one of the first deck 106, the second deck 108, and the third deck 110 shown in FIG. 1) including the TFT control logic level 200 based on the different row address signals received from the self-refresh/wear leveling device 224. The row decoder 208 may then communicate with the WL drivers 214 to activate the selected word lines, and charges accumulated in capacitors of memory elements operatively associated with the selected word lines may then be amplified by a sense amplifier and then stored in the capacitors again.

Still referring to FIG. 2, the second MUX 204 b (e.g., a column MUX) of the TFT control logic level 200 may be in electrical communication with the local deck decoder 202 and the column decoder 206 of the TFT control logic level 200. The second MUX 204 b may be activated by signal(s) from the local deck decoder 202, and may be configured and operated to selectively forward at least one column address signal 232 from the off-deck devices 236 to the column decoder 206. The column decoder 206 may be configured and operated to select particular digit lines (e.g., bit lines) of a deck (e.g., one of the first deck 106, the second deck 108, and the third deck 110 shown in FIG. 1) including the TFT control logic level 200 based on the column address selection signal received thereby.

The column repair device 216 of the TFT control logic level 200 may be in electrical communication with the column decoder 206, and may be configured and operated to substitute a defective column of memory elements of a memory element array of a memory element level (e.g., one of the memory element levels 106C, 108C, 110C shown in FIG. 1) operatively associated with (e.g., within the same deck 104 shown in FIG. 1) the TFT control logic level 200 for a spare, non-defective column of memory elements of the memory element array of the memory element level. The column repair device 216 may transform a column address signal 232 directed to the column decoder 206 (e.g., from the second MUX 204 b) identifying the defective column of memory elements into another column address signal identifying the spare, non-defective column of memory elements. As previously discussed, defective columns (and rows) of memory elements may, for example, be determined using the memory test device 222 of the TFT control logic level 200, as described in further detail below.

The ECC device 220 of the TFT control logic level 200 may be configured and operated to generate an ECC code (also known as “check bits”). The ECC code may correspond to a particular data value, and may be stored along with the data value in a memory element of a memory element level (e.g., one of the memory element levels 106C, 108C, 110C shown in FIG. 1) operatively associated with (e.g., within the same deck 104 shown in FIG. 1) the TFT control logic level 200. When the data value is read back from the memory element, another ECC code is generated and compared with the previously-generated ECC code to access the memory element. If non-zero, the difference in the previously-generated ECC code and the newly-generated ECC code indicates that an error has occurred. If an error condition is detected, the ECC device 220 may then be utilized to correct the erroneous data.

The memory test device 222 of the TFT control logic level 200 may be configured and operated to identify defective (e.g., faulty) memory elements of a memory element array of a memory element level (e.g., one of the memory element levels 106C, 108C, 110C shown in FIG. 1) operatively associated with (e.g., within the same deck 104 shown in FIG. 1) the TFT control logic level 200. The memory test device 222 may attempt to access and write test data to memory elements at different addresses (e.g., different column addresses, different row addresses) within the memory element array. The memory test device 222 may then attempt to read data stored at the memory elements, and compare the read data to the test data expected at the memory elements. If the read data is different than the expected test data, the memory test device 222 may identify the memory elements as defective. The defective memory elements (e.g., defective rows of memory elements, defective columns of memory elements) identified by the memory test device 222 may then be acted upon and/or avoided by other components (e.g., the row repair device 218, the column repair device 216) of the TFT control logic level 200.

With continued reference to FIG. 2, the local I/O devices 212 of the TFT control logic level 200 may be configured and operated to receive data from digit lines selected by the column decoder 206 during read operations, and to output data to digit lines selected by the column decoder 206 during write operations. As shown in FIG. 2, the local I/O devices 212 may include sense amplifiers 210 configured and operated to receive digit line inputs from the digit lines selected by the column decoder 206 and to generate digital data values during read operations. During write operations, the local I/O devices 212 may program data into memory elements of a memory element level operatively associated with the TFT control logic level 200 by placing proper voltages on the digit lines selected by the column decoder 206. For binary operation, one voltage level is typically placed on a digit line to represent a binary “1” and another voltage level to represent a binary “0”.

The third MUX 204 c of the TFT control logic level 200 may be in electrical communication with the local I/O devices 212 and the local deck decoder 202. The third MUX 204 c may be activated by signal(s) received from the local deck decoder 202, and may be configured and operated to receive digital data values generated by the local I/O devices 212 and to generate a global data signal 228 therefrom. The global data signal 228 may be forwarded to one or more off-deck devices 236 (e.g., a controller).

In accordance with embodiments of the disclosure, one or more of the components (e.g., one or more of the local deck decoder 202, the MUX 204 (the first MUX 204 a, the second MUX 204 b, the third MUX 204 c), the column decoder 206, the row decoder 208, the sense amplifiers 210, the local I/O devices 212, the WL drivers 214, the column repair device 216, the row repair device 218, the ECC device 220, the memory test device 222, the self-refresh/wear leveling device 224) of the TFT control logic level 200 may employ one or more TFT CMOS devices including horizontally-neighboring transistors (e.g., horizontally-neighboring NMOS and PMOS transistors) thereof. The horizontally-neighboring transistors may comprise vertical transistors (e.g., vertical NMOS transistor(s), vertical PMOS transistor(s)) exhibiting channels vertically extending between vertically-displaced source and drain regions, or may comprise horizontal transistors (e.g., horizontal NMOS transistor(s), horizontal PMOS transistor(s)) exhibiting channels horizontally extending between horizontally displaced source and drain regions Accordingly, one or more components of at least one of the TFT control logic levels (e.g., the first TFT control logic level 106A, the second TFT control logic level 108A, the third TFT control logic level 110A) of one or more of the decks 104 (e.g., the first deck 106, the second deck 108, the third deck 110) of the stack structure 103 of the semiconductor device 100 previously described with reference to FIG. 1 may include one or more TFT CMOS devices including at least one NMOS transistor (e.g., a vertical NMOS transistor, a horizontal NMOS transistor, an NMOS fin field-effect transistor (FinFET)) horizontally-neighboring at least one PMOS transistor (e.g., a vertical PMOS transistor, a horizontal PMOS transistor, a PMOS FinFET). Non-limiting examples of such TFT CMOS devices are described in further detail below with reference to FIGS. 3A through 5.

Thus, a thin film transistor control logic assembly according to embodiments of the disclosure comprises control logic devices selected from the group comprising decoders, sense amplifiers, word line drivers, repair devices, memory test devices, multiplexers, error checking and correction devices, and self-refresh/wear leveling devices. At least one of the control logic devices comprises at least one device exhibiting a transistor having an N-type channel region laterally displaced from a transistor having a P-type channel region.

FIG. 3A shows a simplified cross-sectional view of a CMOS inverter 300, in accordance with embodiments of the disclosure. The CMOS inverter 300 includes a CMOS circuit 302 comprising a vertical NMOS transistor 304, and a vertical PMOS transistor 306 horizontally displaced from the vertical NMOS transistor 304. The vertical NMOS transistor 304 includes a first semiconductive pillar 308 including an N-type source region 308A, an N-type drain region 308C, and a P-type channel region 308B vertically between the N-type source region 308A and the N-type drain region 308C. The vertical PMOS transistor 306 includes a second semiconductive pillar 310 including a P-type source region 310A, a P-type drain region 310C, and an N-type channel region 310B vertically between the P-type source region 310A and the P-type drain region 310C. The vertical NMOS transistor 304 and the vertical PMOS transistor 306 of the CMOS circuit 302 also include gate electrodes 312 horizontally adjacent the respective channel regions (e.g., the P-type channel region 308B, the N-type channel region 310B) thereof. In addition, the CMOS inverter 300 includes a ground (GND) structure 314 connected to the N-type source region 308A of the vertical NMOS transistor 304; a supply voltage (Vcc) structure 316 connected to the P-type source region 310A of vertical PMOS transistor 306; an output structure 318 connected to the N-type drain region 308C of the vertical NMOS transistor 304 and the P-type drain region 310C of the vertical PMOS transistor 306; and an input structure connected to each of the gate electrodes 312.

The gate electrodes 312 may each individually be formed of and include electrically conductive material including, but not limited to, a metal (e.g., tungsten, titanium, nickel, platinum, gold), a metal alloy, a metal-containing material (e.g., metal nitrides, metal silicides, metal carbides, metal oxides), a conductively-doped semiconductor material (e.g., conductively-doped silicon, conductively-doped germanium, conductively-doped silicon germanium, etc.), or combinations thereof. By way of non-limiting example, the gate electrodes 312 may each individually comprise at least one of titanium nitride (TiN), tantalum nitride (TaN), tungsten nitride (WN), titanium aluminum nitride (TiAlN), elemental titanium (Ti), elemental platinum (Pt), elemental rhodium (Rh), elemental aluminum (Al), elemental copper (Cu), elemental iridium (Ir), iridium oxide (IrOx), elemental ruthenium (Ru), ruthenium oxide (RuOx), alloys thereof, or combinations thereof. In some embodiments, the gate electrodes 312 are formed of TiN.

As shown in FIG. 3A, the vertical NMOS transistor 304 may include one of the gate electrodes 312 laterally adjacent a side of the P-type channel region 308B thereof opposing another side laterally adjacent another of the gate electrodes 312; and the vertical PMOS transistor 306 may include an additional one of the gate electrodes 312 laterally adjacent a side of the N-type channel region 310B opposing another side laterally adjacent yet another of the gate electrodes 312. The gate electrodes 312 may be unshared by the vertical NMOS transistor 304 and the vertical PMOS transistor 306. Each of the vertical NMOS transistor 304 and the vertical PMOS transistor 306 may be considered to be “double-gated” in that two of the gate electrodes 312 are disposed laterally adjacent two opposing sides of the P-type channel region 308B of the vertical NMOS transistor 304; and two other of the gate electrodes 312 are disposed laterally adjacent two opposing sides of the N-type channel region 310B of the vertical PMOS transistor 306.

In additional embodiments, one or more of the vertical NMOS transistor 304 and the vertical PMOS transistor 306 of the CMOS circuit 302 exhibit(s) a different gate configurations than that depicted in FIG. 3A. At least one (e.g., each) of the vertical NMOS transistor 304 and the vertical PMOS transistor 306 may, for example, exhibit a gate configuration other than a “double-gate” configuration. As a non-limiting example, in accordance with additional embodiments of the disclosure, FIG. 3B shows a simplified cross-sectional view of the CMOS inverter 300, wherein the vertical NMOS transistor 304 and the vertical PMOS transistor 306 of the CMOS circuit 302 each exhibit a “single-gate” configuration. As shown in FIG. 3B, only one gate electrode 312′ may be disposed laterally adjacent the P-type channel region 308B of the vertical NMOS transistor 304; and only one other gate electrode 312′ may be disposed laterally adjacent the N-type channel region 310B of the vertical PMOS transistor 306. Put another way, only one side of the P-type channel region 308B of the vertical NMOS transistor 304 may have a gate electrode 312′ laterally adjacent thereto; and only one side of the N-type channel region 310B of the vertical PMOS transistor 306 may have a gate electrode 312′ laterally adjacent thereto. The gate electrodes 312′ may have material compositions substantially similar to those previously described with respect to the gate electrodes 312 (FIG. 3A). As another non-limiting example, in accordance with future embodiments of the disclosure, FIG. 3C shows a simplified cross-sectional view of the CMOS inverter 300, wherein the vertical NMOS transistor 304 and the vertical PMOS transistor 306 of the CMOS circuit 302 each exhibit a “gate-all-around” configuration. One gate electrode 312″ may substantially laterally surround all sides of the P-type channel region 308B (e.g., four sides if the P-type channel region 308B exhibits a rectangular cross-sectional shape) of the vertical NMOS transistor 304; and another gate electrode 312″ may substantially laterally surround all sides of the N-type channel region 310B (e.g., four sides if the N-type channel region 310B exhibits a rectangular cross-sectional shape) of the vertical PMOS transistor 306. The gate electrodes 312″ may have material compositions substantially similar to those previously described with respect to the gate electrodes 312 (FIG. 3A).

With returned reference to FIG. 3A, the P-type channel region 308B of the vertical NMOS transistor 304 may be formed of and include at least one P-type conductivity material. The P-type conductivity material may, for example, comprise polysilicon doped with at least one P-type dopant (e.g., boron ions). The P-type channel region 308B of the vertical NMOS transistor 304 may comprise a solid P-type conductivity material substantially completely filling the entire volume thereof; or the P-type channel region 308B of the vertical NMOS transistor 304 may include an opening (e.g., a hollow, a void, a space) extending through the P-type conductivity material thereof, such that the P-type channel region 308B exhibits a “hollow-channel” configuration. In addition, the N-type source region 308A and the N-type drain region 308C of the vertical NMOS transistor 304 may each individually be formed of and include at least one N-type conductivity material. The N-type conductivity material may, for example, comprise polysilicon doped with at least one N-type dopant (e.g., arsenic ions, phosphorous ions, antimony ions). The first semiconductive pillar 308 including the N-type source region 308A, the P-type channel region 308B, and the N-type drain region 308C may exhibit any desired dimensions (e.g., channel width, channel thickness, channel length) and shape (e.g., a rectangular column shape, a cylindrical column shape, a combination thereof). By way of non-limiting example, a channel thickness (laterally extending in the X-direction) of the first semiconductive pillar 308 may be within a range of from about 10 nanometers (nm) to about 50 nm, a channel width (laterally extending perpendicular to the channel thickness) of the first semiconductive pillar 308 may be within a range of from 20 nm to about 200 nm, and a channel length (vertically extending in the Z-direction) of the first semiconductive pillar 308 may be within a range of from about 50 nm to about 200 nm.

The N-type channel region 310B of the vertical PMOS transistor 306 may be formed of and include at least one N-type conductivity material. The N-type conductivity material may, for example, comprise polysilicon doped with at least one N-type dopant (e.g., arsenic ions, phosphorous ions, antimony ions). The N-type channel region 310B of the vertical PMOS transistor 306 may comprise a solid N-type conductivity material substantially completely filling the entire volume thereof; or the N-type channel region 310B of the vertical PMOS transistor 306 may include an opening (e.g., a hollow, a void, a space) extending through the N-type conductivity material thereof, such that the N-type channel region 310B exhibits a “hollow-channel” configuration. In addition, the P-type source region 310A and the P-type drain region 310C of the vertical PMOS transistor 306 may each individually be formed of and include at least one P-type conductivity material. The P-type conductivity material may, for example, comprise polysilicon doped with at least one P-type dopant (e.g., boron ions). The second semiconductive pillar 310 including the P-type source region 310A, the N-type channel region 310B, and the P-type drain region 310C may exhibit any desired dimensions (e.g., channel width, channel thickness, channel length) and shape (e.g., a rectangular column shape, a cylindrical column shape, a combination thereof). By way of non-limiting example, a channel thickness (laterally extending in the X-direction) of the second semiconductive pillar 310 may be within a range of from about 10 nanometers (nm) to about 50 nm, a channel width (laterally extending perpendicular to the channel thickness) of the second semiconductive pillar 310 may be within a range of from 20 nm to about 200 nm, and a channel length (vertically extending in the Z-direction) of the second semiconductive pillar 310 may be within a range of from about 50 nm to about 200 nm. The dimensions of the second semiconductive pillar 310 may be substantially the same as or different than the dimensions of the first semiconductive pillar 308.

The GND structure 314, the Vcc structure 316, the output structure 318, and the input structure of the CMOS inverter 300 may exhibit conventional configurations (e.g., conventional dimensions, conventional shapes, conventional conductive material compositions, conventional material distributions, conventional orientations, conventional arrangements), which are not described in detail herein.

FIGS. 4A through 5 (including FIGS. 4A, 4B, 4C, and 5) show simplified cross-sectional views of additional TFT CMOS devices according to embodiments of the disclosure that may be included in TFT control logic levels (e.g., the TFT control logic level 200 shown in FIG. 2; one or more of the first TFT control logic level 106A, the second TFT control logic level 108A, and the third TFT control logic level 110A shown in FIG. 1) of the disclosure. Throughout FIGS. 4A through 5 and the written description associated therewith, functionally similar features (e.g., structures) are referred to with similar reference numerals incremented by 100. To avoid repetition, not all features shown in FIGS. 4A through 5 are described in detail herein. Rather, unless described otherwise below, throughout FIGS. 4A through 5 (and the written description associated therewith), a feature designated by a reference numeral that is a 100 increment of the reference numeral of a previously-described feature (whether the previously-described feature is first described before the present paragraph, or is first described after the present paragraph) will be understood to be substantially similar to the previously-described feature.

FIG. 4A shows a simplified cross-sectional view of a CMOS inverter 400, in accordance with additional embodiments of the disclosure. The CMOS inverter 400 includes a CMOS circuit 402 comprising a horizontal NMOS transistor 404, and a horizontal PMOS transistor 406 horizontally (e.g., laterally) displaced from the horizontal NMOS transistor 404. The horizontal NMOS transistor 404 comprises a first semiconductive section 408 of a semiconductive structure 401, wherein the first semiconductive section 408 includes an N-type source region 408A, an N-type drain region 408C, and a P-type channel region 408B laterally (e.g., horizontally) between the N-type source region 408A and the N-type drain region 408C. The horizontal PMOS transistor 406 includes a second semiconductive section 410 of the semiconductive structure 401, the second semiconductive section 410 including a P-type source region 410A, a P-type drain region 410C, and an N-type channel region 410B laterally between the P-type source region 310A and the P-type drain region 310C. The horizontal NMOS transistor 404 and the horizontal PMOS transistor 406 of the CMOS circuit 402 also include gate electrodes 412 vertically adjacent the respective channel regions (e.g., the P-type channel region 408B, the N-type channel region 410B) thereof. In addition, the CMOS inverter 400 includes a ground (GND) structure 414 connected to the N-type source region 408A of the horizontal NMOS transistor 404; a supply voltage (Vcc) structure 416 connected to the P-type source region 410A of the horizontal PMOS transistor 406; an output structure 418 connected to the N-type drain region 408C of the horizontal NMOS transistor 404 and the P-type drain region 410C of the horizontal PMOS transistor 406; and an input structure connected to each of the gate electrodes 412.

As shown in FIG. 4A, in some embodiments, the gate electrodes 412 vertically overlie the P-type channel region 408B of the horizontal NMOS transistor 404 and the N-type channel region 410B of the horizontal PMOS transistor 406, such that the horizontal NMOS transistor 404 and the horizontal PMOS transistor 406 of the CMOS circuit 402 each exhibit a “top-gate” configuration. In additional embodiments, one or more of the horizontal NMOS transistor 404 and the horizontal PMOS transistor 406 of the CMOS circuit 402 exhibit(s) a different gate configuration than that depicted in FIG. 4A. At least one (e.g., each) of the horizontal NMOS transistor 404 and the horizontal PMOS transistor 406 may, for example, exhibit a gate configuration other than a “top-gate” configuration. As a non-limiting example, in accordance with additional embodiments of the disclosure, FIG. 4B shows a simplified cross-sectional view of the CMOS inverter 400 wherein the horizontal NMOS transistor 404 and the horizontal PMOS transistor 406 of the CMOS circuit 402 each exhibit a “bottom-gate” configuration. As shown in FIG. 4B, the gate electrodes 412 vertically underlie the P-type channel region 408B of the horizontal NMOS transistor 404 and the N-type channel region 410B of the horizontal PMOS transistor 406.

With returned reference to FIG. 4A, the semiconductive structure 401 may be formed of and include at least one semiconductive material, such as one or more of silicon (e.g., amorphous silicon, polysilicon), silicon-germanium, germanium, gallium arsenide, gallium nitride, and indium phosphide. The horizontal NMOS transistor 404 and the horizontal PMOS transistor 406 may be at least partially (e.g., substantially) located within the semiconductive structure 401. The material compositions of the horizontal NMOS transistor 404 (including the material compositions of the N-type source region 408A, the N-type drain region 408C, and the P-type channel region 408B thereof) and the horizontal PMOS transistor 406 (including the material compositions of the P-type source region 410A, the P-type drain region 410C, and the N-type channel region 410B thereof) may respectively be substantially similar to those of the vertical NMOS transistor 304 (including the material compositions of the N-type source region 308A, the N-type drain region 308C, and the P-type channel region 308B thereof) and the vertical PMOS transistor 306 (including the material compositions of the P-type source region 310A, the P-type drain region 310C, and the N-type channel region 310B thereof) previously described with reference to FIG. 3A.

As shown in FIG. 4A, vertical boundaries of the different regions (e.g., the N-type source region 408A, the N-type drain region 408C, the P-type channel region 408B) of the horizontal NMOS transistor 404 may be substantially coplanar with one another; and vertical boundaries of the different regions (e.g., the P-type source region 410A, the P-type drain region 410C, the N-type channel region 410B) of the horizontal PMOS transistor 406 may also be substantially coplanar with one another. In additional embodiments, vertical boundaries of at least one of the different regions (e.g., the P-type channel region 408B) of the horizontal NMOS transistor 404 may be offset from vertical boundaries of at least one other of the different regions (the N-type source region 408A, the N-type drain region 408C) of the horizontal NMOS transistor 404; and/or vertical boundaries of at least one of the different regions (e.g., the N-type channel region 410B) of the horizontal PMOS transistor 406 may be offset from vertical boundaries of at least one other of the different regions (the P-type source region 410A, the P-type drain region 410C) of the horizontal PMOS transistor 406. As a non-limiting example, in accordance with additional embodiments of the disclosure, FIG. 4C shows a simplified cross-sectional view of the CMOS inverter 400 wherein upper vertical boundaries of the P-type channel region 408B of the horizontal NMOS transistor 404 are offset from (e.g., vertically overlie) upper vertical boundaries of the N-type source region 408A and the N-type drain region 408C of the horizontal NMOS transistor 404; and wherein upper vertical boundaries of the N-type channel region 410B of the horizontal PMOS transistor 406 are offset from (e.g., vertically overlie) upper vertical boundaries of the P-type source region 410A and the P-type drain region 410C of the horizontal PMOS transistor 406. As shown in FIG. 4C, upper vertical boundaries of the P-type channel region 408B of the horizontal NMOS transistor 404 and the N-type channel region 410B of the horizontal PMOS transistor 406 may be substantially coplanar with uppermost vertical boundaries of the semiconductive structure 401; upper vertical boundaries of the N-type source region 408A and the N-type drain region 408C of the horizontal NMOS transistor 404 may be offset from (e.g., vertically underlie) the uppermost vertical boundaries of the semiconductive structure 401; and upper vertical boundaries of the P-type source region 410A and the P-type drain region 410C of the horizontal PMOS transistor 406 may be offset from (e.g., vertically underlie) the uppermost vertical boundaries of the semiconductive structure 401.

The GND structure 414, the Vcc structure 416, the output structure 418, and the input structure of the CMOS inverter 400 may exhibit conventional configurations (e.g., conventional dimensions, conventional shapes, conventional conductive material compositions, conventional material distributions, conventional orientations, conventional arrangements), which are not described in detail herein.

FIG. 5 shows a simplified cross-sectional view of a CMOS inverter 500, in accordance with additional embodiments of the disclosure. The CMOS inverter 500 includes a CMOS circuit 502 comprising a NMOS FinFET 504, and a PMOS FinFET 506 horizontally (e.g., laterally) displaced from the NMOS FinFET 504. The NMOS FinFET 504 comprises a first semiconductive fin 508 including an N-type source region 508A, an N-type drain region 508C, and a P-type channel region 508B horizontally between the N-type source region 508A and the N-type drain region 508C. The PMOS FinFET 506 includes a second semiconductive fin 510 including a P-type source region 510A, a P-type drain region 510C, and an N-type channel region 510B horizontally between the P-type source region 510A and the P-type drain region 510C. The NMOS FinFET 504 and the PMOS FinFET 506 of the CMOS circuit 502 also include gate electrodes 512 adjacent (e.g., vertically adjacent, laterally adjacent) the respective channel regions (e.g., the P-type channel region 508B, the N-type channel region 510B) thereof. The NMOS FinFET 504 and the PMOS FinFET 506 of the CMOS inverter 500 may be located on or over an insulative structure 501. In addition, the CMOS inverter 500 includes a ground (GND) structure 514 connected to the N-type source region 508A of the NMOS FinFET 504; a supply voltage (Vcc) structure 516 connected to the P-type source region 510A of the PMOS FinFET 506; an output structure 518 connected to the N-type drain region 508C of the NMOS FinFET 504 and the P-type drain region 510C of the PMOS FinFET 506; and an input structure connected to each of the gate electrodes 512.

As shown in FIG. 5, one of the gate electrodes 512 may extend over opposing sides (e.g., opposing side surfaces) and a top (e.g., an upper surface) of the P-type channel region 508B of the first semiconductive fin 508 of the NMOS FinFET 504. In addition, another of the gate electrodes 512 may extend over opposing sides (e.g., opposing side surfaces) and a top (e.g., an upper surface) of the N-type channel region 510B of the second semiconductive fin 510 of the PMOS FinFET 506. In additional embodiments, one or more (e.g., each) of the NMOS FinFET 504 and the PMOS FinFET 506 exhibit(s) a “gate-all-around” configuration. For example, one of the gate electrodes 512 may substantially surround the opposing sides, the top, and a bottom of the P-type channel region 508B of the NMOS FinFET 504; and another of the gate electrodes 512 may substantially surround the opposing sides, the top, and a bottom of the N-type channel region 510B of the PMOS FinFET 506. In some such embodiments, the P-type channel region 508B of the NMOS FinFET 504 comprises one or more (e.g., multiple) P-type conductivity structures, and a conductive material of one of the gate electrodes 512 substantially surrounds surfaces of the P-type conductivity structures between the N-type source region 508A and the N-type drain region 508C; and the N-type channel region 510B of the PMOS FinFET 506 comprises one or more (e.g., multiple) N-type conductivity structures, and a conductive material of another of the gate electrodes 512 substantially surrounds surfaces of the N-type conductivity structures between the P-type source region 510A and the P-type drain region 510C.

The insulative structure 501, the GND structure 514, the Vcc structure 516, the output structure 518, the input structure, and the additional input structure of the CMOS inverter 500 may exhibit conventional configurations (e.g., conventional dimensions, conventional shapes, conventional conductive material compositions, conventional material distributions, conventional orientations, conventional arrangements), which are not described in detail herein.

While FIGS. 3A through 5 (including FIGS. 3A, 3B, 3C, 4A, 4B, 4C, and 5) show non-limiting examples of different CMOS inverters that may be included in one or more components of at least one of the TFT control logic levels (e.g., the first TFT control logic level 106A, the second TFT control logic level 108A, the third TFT control logic level 110A) of one or more of the decks 104 (e.g., the first deck 106, the second deck 108, the third deck 110) of the stack structure 103 previously described with reference to FIG. 1, one or more components of at least one of the TFT control logic levels may include other devices (e.g., other CMOS devices) in addition to or in place of the CMOS inverters previously described with reference to FIGS. 3A through 5. By way of non-limiting example, one or more components of at least one of the TFT control logic levels of one or more of the decks 104 (FIG. 1) of the semiconductor device 100 (FIG. 1) may include one of more of other inverters (e.g., other CMOS inverters, such as balanced CMOS inverters), transmission pass gates (e.g., CMOS transmission pass gates, such as balanced CMOS transmission pass gates), ring oscillators, and negative-AND (NAND) gates (e.g., two-input NAND gates, such as balanced two-input NAND gates).

Thus, a memory device in accordance with embodiments of the disclosure comprises a base control logic structure comprising control logic devices, and a stack structure in electrical communication with the base control logic structure. The stack structure comprises decks each comprising a memory element level comprising memory elements, and a control logic level in electrical communication with the memory element level. The control logic level comprises additional control logic devices selected from the group comprising decoders, sense amplifiers, word line drivers, repair devices, memory test devices, multiplexers, error checking and correction devices, and self-refresh/wear leveling devices. At least one of the additional control logic devices comprises a circuit comprising neighboring, laterally-displaced transistors having different channel conductivities than one another.

Semiconductor devices (e.g., the semiconductor device 100 previous described with reference to FIG. 1) including semiconductor device structures (e.g., the stack structure 103 and the base control logic structure 102 previous described with reference to FIG. 1) in accordance with embodiments of the disclosure may be used in embodiments of electronic systems of the disclosure. For example, FIG. 6 is a block diagram of an illustrative electronic system 600 according to embodiments of disclosure. The electronic system 600 may comprise, for example, a computer or computer hardware component, a server or other networking hardware component, a cellular telephone, a digital camera, a personal digital assistant (PDA), portable media (e.g., music) player, a Wi-Fi or cellular-enabled tablet such as, for example, an iPad® or SURFACE® tablet, an electronic book, a navigation device, etc. The electronic system 600 includes at least one memory device 602. The at least one memory device 602 may include, for example, an embodiment of a semiconductor device previously described herein (e.g., semiconductor device 100 previously previous described with reference to FIG. 1), wherein different decks (e.g., the decks 104) of a stack structure (e.g., the stack structure 102) of the semiconductor device each include a control logic level (e.g., the TFT control logic level 200 previously described with reference to FIG. 2) comprising an assembly of control logic devices, at least one of the control logic devices including at least one device (e.g., a TFT CMOS device) exhibiting laterally-displaced transistors (e.g., laterally-displaced vertical transistors, laterally-displaced horizontal transistors, laterally-displaced FinFETs). The electronic system 600 may further include at least one electronic signal processor device 604 (often referred to as a “microprocessor”). The electronic signal processor device 604 may, optionally, include an embodiment of a semiconductor device previously described herein (e.g., semiconductor device 100 previously previous described with reference to FIG. 1). The electronic system 600 may further include one or more input devices 606 for inputting information into the electronic system 600 by a user, such as, for example, a mouse or other pointing device, a keyboard, a touchpad, a button, or a control panel. The electronic system 600 may further include one or more output devices 608 for outputting information (e.g., visual or audio output) to a user such as, for example, a monitor, a display, a printer, an audio output jack, a speaker, etc. In some embodiments, the input device 606 and the output device 608 may comprise a single touchscreen device that can be used both to input information to the electronic system 600 and to output visual information to a user. The one or more input devices 606 and output devices 608 may communicate electrically with at least one of the memory device 602 and the electronic signal processor device 604.

Thus, in accordance with embodiments of the disclosure, an electronic system comprises a semiconductor device comprising a stack structure. The stack structure comprises decks each comprising a memory element level comprising memory elements and a control logic level in electrical communication with the memory element level and comprising control logic devices. At least one of the control logic devices of the control logic level of one or more of the decks comprises at least one device exhibiting laterally-displaced transistors.

The devices, structures, assemblies, systems, and methods of the disclosure advantageously facilitate improved semiconductor device performance, reduced costs (e.g., manufacturing costs, material costs), increased miniaturization of components, and greater packaging density as compared to conventional devices, conventional structures, conventional assemblies, conventional systems, and conventional methods. The devices, structures, assemblies, systems, and methods of the disclosure may also improve performance, scalability, efficiency, and simplicity as compared to conventional devices, conventional structures, conventional assemblies, conventional systems, and conventional methods.

While the disclosure is susceptible to various modifications and alternative forms, specific embodiments have been shown by way of example in the drawings and have been described in detail herein. However, the disclosure is not limited to the particular forms disclosed. Rather, the disclosure is to cover all modifications, equivalents, and alternatives falling within the scope of the following appended claims and their legal equivalents.

Claims (31)

What is claimed is:
1. A semiconductor device, comprising:
a stack structure comprising decks each comprising:
a memory element level comprising memory elements; and
a control logic level in electrical communication with the memory element level and comprising control logic devices, at least one of the control logic devices of the control logic level of one or more of the decks comprising at least one device exhibiting transistors laterally displaced from one another.
2. The semiconductor device of claim 1, further comprising a base control logic structure in electrical communication with the stack structure and comprising additional control logic devices.
3. The semiconductor device of claim 2, wherein the additional control logic devices of the base control logic structure exhibit different configurations and have different operational functions than the control logic devices of the control logic level of each of the decks of the stack structure.
4. The semiconductor device of claim 1, further comprising an access device level comprising access devices electrically connected to the memory elements of the memory element level, the control logic level in electrical communication with the access device level.
5. The semiconductor device of claim 1, wherein the memory element level further comprises access devices electrically connected to the memory elements.
6. The semiconductor device of claim 1, wherein the at least one device comprises at least one circuit comprising:
a first transistor comprising a P-type source region, a P-type drain region, an N-type channel region between the P-type source region and the P-type drain region, and at least one gate electrode adjacent the N-type channel region; and
a second transistor laterally displaced from the first transistor and comprising an N-type source region, an N-type drain region, a P-type channel region between the N-type source region and the N-type drain region, and at least one additional gate electrode adjacent the P-type channel region.
7. The semiconductor device of claim 6, wherein:
the first transistor comprises a first vertical transistor comprising the P-type source region, the P-type drain region, the N-type channel region vertically between the P-type source region and the P-type drain region, and the at least one gate electrode laterally adjacent the N-type channel region; and
the second transistor comprises a second vertical transistor comprising the N-type source region, the N-type drain region, the P-type channel region vertically between the N-type source region and the N-type drain region, and the at least one additional gate electrode laterally adjacent the P-type channel region.
8. The semiconductor device of claim 7, wherein:
the first vertical transistor exhibits a first double-gate configuration comprising gate electrodes laterally adjacent opposing sides of the N-type channel region thereof; and
the second vertical transistor exhibits a second double-gate configuration comprising additional gate electrodes laterally adjacent opposing sides of the P-type channel region thereof.
9. The semiconductor device of claim 7, wherein:
the first vertical transistor exhibits a first single-gate configuration comprising only one gate electrode laterally adjacent the N-type channel region thereof; and
the second vertical transistor exhibits a second single-gate configuration comprising only one other gate electrode laterally adjacent the P-type channel region thereof.
10. The semiconductor device of claim 7, wherein:
the first vertical transistor exhibits a first gate-all-around configuration comprising a gate electrode substantially surrounding all sides of the N-type channel region thereof; and
the second vertical transistor exhibits a second gate-all-around configuration comprising another gate electrode substantially surrounding all sides of the P-type channel region thereof.
11. The semiconductor device of claim 7, wherein:
the N-type channel region of the first vertical transistor comprises a solid N-type conductivity material substantially filling the entire volume of the N-type channel region; and
the P-type channel region of the second vertical transistor comprises a solid P-type conductivity material substantially filling the entire volume of the P-type channel region.
12. The semiconductor device of claim 7, wherein:
the N-type channel region of the first vertical transistor exhibits an opening extending into an N-type conductivity material thereof; and
the P-type channel region of the second vertical transistor exhibits another opening extending into a P-type conductivity material thereof.
13. The semiconductor device of claim 6, wherein:
the first transistor comprises a first horizontal transistor comprising the P-type source region, the P-type drain region, the N-type channel region laterally between the P-type source region and the P-type drain region, and a gate electrode vertically adjacent the N-type channel region; and
the second transistor comprises a second horizontal transistor comprising the N-type source region, the N-type drain region, the P-type channel region laterally between the N-type source region and the N-type drain region, and an additional gate electrode vertically adjacent the P-type channel region.
14. The semiconductor device of claim 13, wherein:
the first horizontal transistor exhibits a first top-gate configuration comprising the gate electrode vertically overlying the N-type channel region thereof; and
the second horizontal transistor exhibits a second top-gate configuration comprising the additional gate electrode vertically overlying the P-type channel region thereof.
15. The semiconductor device of claim 13, wherein:
the first horizontal transistor exhibits a first bottom-gate configuration comprising the gate electrode vertically underlying the N-type channel region thereof; and
the second horizontal transistor exhibits a second bottom-gate configuration comprising another gate electrode vertically underlying the P-type channel region thereof.
16. The semiconductor device of claim 13, wherein:
upper surfaces of the P-type source region, the P-type drain region, the N-type channel region of the first horizontal transistor are substantially coplanar with one another; and
upper surfaces of the N-type source region, the N-type drain region, the P-type channel region of the second horizontal transistor are substantially coplanar with one another.
17. The semiconductor device of claim 13, wherein:
upper surfaces of two or more of the P-type source region, the P-type drain region, the N-type channel region of the first horizontal transistor are offset from one another; and
upper surfaces of two of more of the N-type source region, the N-type drain region, the P-type channel region of the second horizontal transistor are offset from one another.
18. The semiconductor device of claim 6, wherein:
the first transistor comprises a first FinFET comprising the P-type source region, the P-type drain region, the N-type channel region laterally between the P-type source region and the P-type drain region, and a gate electrode extending over the N-type channel region; and
the second transistor comprises a second FinFET comprising the N-type source region, the N-type drain region, the P-type channel region laterally between the N-type source region and the N-type drain region, and an additional gate electrode extending over the P-type channel region.
19. The semiconductor device of claim 18, wherein:
the gate electrode extends over opposing side surfaces and an upper surface of the N-type channel region of the first FinFET; and
the additional gate electrode extends over opposing side surfaces and an upper surface of the P-type channel region of the second FinFET.
20. The semiconductor device of claim 18, wherein:
the gate electrode substantially surrounds all surfaces of the N-type channel region of the first FinFET not covered by the P-type source region and the P-type drain region; and
the additional gate electrode substantially surrounds all surfaces of the P-type channel region of the second FinFET not covered by the N-type source region and the N-type drain region.
21. A memory device, comprising:
a base control logic structure comprising control logic devices; and
a stack structure in electrical communication with the base control logic structure and comprising decks each comprising:
a memory element level comprising memory elements; and
a control logic level in electrical communication with the memory element level and comprising additional control logic devices selected from the group comprising decoders, sense amplifiers, word line drivers, repair devices, memory test devices, multiplexers, error checking and correction devices, and self-refresh/wear leveling devices, at least one of the additional control logic devices comprising a circuit comprising neighboring, laterally displaced transistors having different channel conductivities than one another.
22. The memory device of claim 21, wherein control logic devices of the base control logic structure comprise one or more of charge pumps, delay-locked loop devices, and drain supply voltage regulators.
23. The memory device of claim 21, wherein the control logic level of each of the decks individually comprises the circuit.
24. The memory device of claim 21, wherein the control logic level of each of the decks of the stack structure exhibits substantially the same configuration as the control logic level of each other of the decks of the stack structure.
25. The memory device of claim 21, wherein the neighboring, laterally displaced transistors of the circuit comprise vertical transistors.
26. The memory device of claim 21, wherein the neighboring, laterally displaced transistors of the circuit comprise horizontal transistors.
27. The memory device of claim 21, wherein the neighboring, laterally displaced transistors of the circuit comprise fin field-effect transistors.
28. The memory device of claim 21, further comprising an access device level comprising access devices electrically connected to the memory elements of the memory element level, the control logic level in electrical communication with the access device level.
29. A thin film transistor control logic assembly comprising control logic devices selected from the group comprising decoders, sense amplifiers, word line drivers, repair devices, memory test devices, multiplexers, error checking and correction devices, and self-refresh/wear leveling devices, at least one of the control logic devices comprising at least one device exhibiting a transistor having an N-type channel region laterally displaced from another transistor having a P-type channel region.
30. A method of operating a semiconductor device, comprising:
controlling functions of a stack structure having multiple decks each comprising memory cells using control logic levels of the multiple decks, the control logic levels each comprising at least one control logic device exhibiting laterally-displaced transistors; and
controlling additional functions of the stack structure using a base control logic structure in electrical communication with the control logic levels of the stack structure.
31. An electronic system, comprising:
a semiconductor device comprising:
a stack structure comprising decks each comprising:
a memory element level comprising memory elements; and
a control logic level in electrical communication with the memory element level and comprising control logic devices, at least one of the control logic devices of the control logic level of one or more of the decks comprising at least one device exhibiting laterally-displaced transistors.
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